Regarding QLineEdit , of how to know the focus of lineedit currently

[Pradeep Kumar]

Hi,

I have implemented MyLineEdit inherting QLineEdit, and implemented focusevent

void MyLineEdit::focusInEvent(QFocusEvent *event)
{
    QLineEdit::focusInEvent(event);

    qDebug () << Q_FUNC_INFO <<  "focus on lineedit :>" << endl;
}

then i have created two lineedit object to enter text, i have text values from another widget having buttons, so how do i know which lineedit objects is in focus so i will append to text from buttons.?.

Thanks,

[raven-worx]

@Pradeep-Kumar

1. lineEdit->hasFocus()
2. QApplication::focusWidget() to get the QWidget which is currently focused

[Pradeep Kumar]

k,

QLineedit has method hasFocus();

if(m_lineEdit1->hasFocus())
    {
            m_lineEdit1->setText(value);
    }
    else
    {
            m_lineEdit2->setText(value);
    }

link of the image where showing to lineedit, and kayboard having buttons,

https://postimg.org/image/grbqk08wl/

if i have clicked first lineedit, if i enter the buttons, i am getting values to second lineedit.
but focus is in First lineedit.

How can i resolve?.

Thanks,

[raven-worx]

@Pradeep-Kumar
ok, you didn't mention that the sending widget is in another window.
You then have to use windowWidget->focusWidget()

That's the reason why there is the concept of input contexts. But this is out-of-scope i guess. This is a very complex topic and needs quite some research from your side before starting.
Also you might want to look into the code of the QtVirtualKeyboard module for that.

[Pradeep Kumar]

i have established signal slot connection from one widget to another widget,
but only problem i am finding is, which lineedit is in focus and how to append the button text to the lineedit focused.?

Thanks,

[jsulm]

@Pradeep-Kumar As @raven-worx said use windowWidget->focusWidget() to get the widget which has the focus. But check whether it is one of the line edits.
To append text it is as easy as

lineEdit->setText(lineEdit->text() + "NEW TEXT");